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Myelography

Definition

This is an imaging test that uses a special contrast material to view the spinal cord. The contrast material used in the
x-ray
can help your doctor clearly outline the space containing the spinal cord and nerves.

Reasons for Procedure

This is used to detect problems in and around the spinal cord, such as:

Possible Complications

Problems from the procedure are rare, but all procedures have some risk. Your doctor will review potential problems, like:

Headache

Allergic reaction to the contrast

Bleeding

Inflamed or infected spinal cord

What to Expect

Prior to Procedure

Your doctor may do the following:

Physical exam and medical history

Ask if you are pregnant—this test is not usually done on women who are pregnant

Ask about your medical history

Determine if you have any allergies

Leading up to your procedure:

The night before, do not eat solid foods after midnight. You should continue to drink liquids.

If your doctor prescribes a sedative:

Arrange to have someone drive you home. Also, arrange for someone to help you at home.

Take the sedative before the exam as directed by your doctor.

You may have to stop certain medications up to a week before the procedure.

Anesthesia

There is usually no anesthesia with this procedure. Your doctor may give you a mild sedative. You may have local anesthetic to reduce the pain of the needle.

Description of the Procedure

You will lie on your side or face down. Or, you may sit on the edge of a table, leaning forward. You may be given a local anesthetic injection in your back.

Your doctor will insert a needle into the space between your vertebrae. A small amount of fluid will be removed from the spinal canal. Next, the contrast will be injected through the needle. Your doctor will use an imaging procedure called fluoroscopy. This combines an x-ray unit with a camera and a screen.

To take the images, you will be positioned stomach-down on the table. A brace will be against your shoulders. The table will be tipped forward. Next, the doctor will take images of your back. You will hold your breath while the images are taken. You may be asked to turn slightly to one side and then the other.

Often, your doctor will perform a
CT scan
after myelography. This is to see the spread of the contrast dye.

Revision Information

This content is reviewed regularly and is updated when new and relevant evidence is made available. This information is neither intended nor implied to be a substitute for professional medical advice. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with questions regarding a medical condition.